查询词典 visual acuity

And they were visual acuity, contrast sensitivity function, accommodation and vergence ocular optical aberration and cortical topography.② From the general data collection, the volume of refractive surgery was in the development curve from sharp up to flat up trend, LASIK was the domain one.

结果 从以不同角度设计的临床基础研究中总结出与视觉功能有关的参数，主要有视敏度和对比敏感度视力、调节和辐辏功能参数、眼球像差、角膜形态参数。

Extracellularly recording the responses of dLGN neurons to sinusoidal gratings with different orientations showed that optimum orientations of dLGN neurons in trained cats, compared with that in untrained cats, did not shift in favour of the trained orientation. For cells with receptive fields located within 15°visual acuity away from the foveae, there are no difference in orientation bias and firing rate at trained orientation between the trained cats and untrained cats.

细胞外记录外膝体背核神经元对不同方位正弦光栅刺激的反应显示，垂直或水平方位正弦光栅信号训练的猫，与正常猫相比，其外膝体细胞的最优方位并未向着训练方位发生明显改变，对于感受野位于中央区15 度视角以内的细胞来说，其方位选择性强度以及在训练方位的发放强度与正常猫无明显差异。

The postoperative stimulated symptoms, uncorrected visual acuity, refractive power, time of epithelial healing and corneal hazes were observed and analyzed.

比较两组术后刺激症状、角膜瓣或角膜上皮瓣制作及愈合情况、术后视力变化、术后屈光度变化、术后散光度变化以及并发症。

Results The average onset age of moyamoya disease was very young. Female was dominant in our studied. Younger patients with moyamoya disease mainly suffered cerebral ischemia (87.5%). Adult patients suffered more cerebral hemorrhage (41.2%). Among clinical manifestations, headache, vertigo, paralysis, hemiplegia or alternative hemiplegia were common symptoms. Sometimes aphasia, dementia, visual acuity were decreasing, epilepsy and chorea minor might occur. 14 cases had received CT examination, but none was diagnosed moyamoya disease by CT. All patients received MRI and MRA examinations were diagnosed as moyatnoya disease.

结果 烟雾病发病平均年龄较轻，女性多于男性；少儿烟雾病患者以缺血改变为主(87.5%)，成年烟雾病患者缺血改变(58.8%)与出血改变(41.2%)相当；临床以头痛、头晕、肢体无力或偏瘫或交替性瘫痪为主要表现，同时可伴失语、智能下降、视力下降、癫痫发作、小舞蹈发作等表现。14例行头CT检查仅示颅内病灶，均未提示烟雾病；25例均行MRI和MRA检查发现颅内病灶，显示颈内动脉虹吸末段和大脑前或中动脉近段狭窄或闭塞，并有脑基底部异常血管网及侧支循环形成，均被诊断为烟雾病。

Although outnumbered more than 20:1 by rod photoreceptors, cone cells in the human eye mediate daylight vision and are critical for visual acuity and color discrimination. A variety of human retinal diseases, e.g.

尽管视杆细胞光感受器在数量上以20：1远远超过视锥细胞，然而人类眼中的视锥细胞担负着调节明视觉的重要任务，并对视力和颜色辨别有重要作用。

RESULTS: The postoperative IOP significantly declined compared with preoperative value (P.05); All maintained functional filtering blebs; and the visual acuity kept invariable or improved.

结果：术后与术前相比眼压明显降低，P.05，差异有统计学意义；滤过泡均为功能性滤过泡；视力保持不变或有所改善；并发症仅为早期浅前房和低眼压。

Methods Forty volunteers with best corrected visual acuity better than 5.0 in the right eye were enrolled in the study. Their ages ranged from 21 years to 32 years; they were all emmetropes or myopes.

对年龄为21~32岁的40例最佳矫正视力≥5.0的近视和正视志愿者分别采用照相机拍摄法、Pupillometer瞳孔测量仪和Rosebaum瞳孔尺三种方法测量瞳孔大小。

Methods Four hundred and eighty-four (968 eyes) myopes were treated with laser in situ keratomileusis in the Qinghai Red Cross Hospital from May 2005 to March 2007. The predictability of visual acuity and refractive error postoperative were analyzed.

收集2005年5月～2007年3月在地处高原地区的青海红十字医院完成准分子激光角膜磨镶术(laser in situ keratomileusis， LASIK)的患者484例（968眼）。

On the condition ,for simpling the terrain model ,the paper gives a detailed algorithm by takeing gemotry and visual acuity as error criterion to decrease the load of computer.All these ,the result will realize the purpose of increasing the scene frame rate.

在此基础上，论文利用一种基于几何和人眼视觉空间的混合误差判别准则对地表网格模型进行了一定的简化，并以此来降低计算机的处理数据量，达到快速的场景生成。

Objective To discuss the causes of myopia, and providing evidences of visual acuity health for students in shools.

目的 探讨近视原因，并对在校学生视力保健提供依据。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。